/**
 * The MIT License
 *
 * Copyright (c) 2010 Benjamin Klum
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package org.helgoboss.scala_logging_osgi

import org.osgi.service.log.LogService
import org.osgi.framework.BundleContext

trait OsgiLogging {
    protected def bundleContext: BundleContext

    protected object log {
        def debug(message: String, throwable: Throwable = null) {
            log(LogService.LOG_DEBUG, message, throwable)
        }
        
        def info(message: String, throwable: Throwable = null) {
            log(LogService.LOG_INFO, message, throwable)
        }
        
        def warn(message: String, throwable: Throwable = null) {
            log(LogService.LOG_WARNING, message, throwable)
        }
        
        def error(message: String, throwable: Throwable = null) {
            log(LogService.LOG_ERROR, message, throwable)
        }
    
        private def log(logLevel: Int, message: String, throwable: Throwable) {
            val ref = bundleContext.getServiceReference(classOf[LogService].getName)
            if (ref != null) {
                val logService = bundleContext.getService(ref).asInstanceOf[LogService]
                if (logService != null) {
                    logService.log(logLevel, message, throwable);
                }
            }
        }        
    }
}